/Engine/Source/Runtime/SignalProcessing/Public/DSP/LongDelayAPF.h
Process InSamples and place filtered data in OutSamples and delay line samples in OutDelaySamples. The OutDelaySamples correspond to "w[n] = InSamples[n] + InG * w[n - InDelay]"
void ProcessAudio ( const [FAlignedFloatBuffer](API\Runtime\SignalProcessing\DSP\FAlignedFloatBuffer) & InSamples, [FAlignedFloatBuffer](API\Runtime\SignalProcessing\DSP\FAlignedFloatBuffer) & OutSamples, [FAlignedFloatBuffer](API\Runtime\SignalProcessing\DSP\FAlignedFloatBuffer) & OutDelaySamples )